These features are invisible underneath ordinary light but grow to be seen when subjected to UV rays, earning UV light detection extremely reputable. Look at the coloration of the serial numbers around the bill and Examine it to the colour with the Treasury Seal. If they do not match, the https://hongkongdollar10072702.dgbloggers.com/39368111/an-unbiased-view-of-how-copyright-pens-detect-copyright